NKOXSekw 0,6/1 kV, NKOXSekw EMC 0,6/1 kV

Common issues

• Insulation degradation from prolonged heat exposure near hot machinery surfaces
• Mechanical damage during installation from excessive bend radius or crushing
• Moisture ingress at glands or terminations reducing insulation resistance
• Chafing where the cable is not properly clipped or supported along its route
• Poor termination workmanship causing partial discharge at medium-voltage joints
• Other cables laid across the route reducing its fire-survival protection

Inspection checklist

• Visual condition of the outer sheath along the full route
• Cable support/clipping and bend radius compliance
• Gland and termination condition at both the generator and switchboard ends
• Insulation resistance (megger) test
• Continuity and earth continuity check
• Fire-resistant/circuit-integrity route protection intact, with no other cables encroaching on its clearance
• Cable identification/labeling at both ends

Service intervals

Typical wear limits

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

• Matching fire-resistant/circuit-integrity MV cable of the same cross-section and voltage class
• Matching MV cable glands
• MV termination/jointing kit
• Cable lugs of the correct rating
• Cable support clips/cleats matching the installation

Safety

• Medium-voltage shock hazard - proof of dead, isolation, and earthing required before any work (permit to work)
• This cable forms part of the emergency power fire-survival circuit - damage or unauthorised route changes can compromise emergency generator availability during a fire
• MV terminations should only be made or tested by qualified personnel
• A fire-resistant cable installed on an unprotected or incorrect route may still fail in a fire if not installed as approved

Class survey

Note: this catalog entry's 'typ' field ('Emergency Generator Set') does not match the actual product - this is a fire-resistant medium-voltage power cable used to connect an emergency generator to the distribution system, not the generator set itself; the content above addresses the cable. Class surveyors verify the emergency source cable route/rating supports SOLAS emergency power availability requirements and check insulation resistance records at periodic survey.